Strange PS CS4 behavior

[thomas_janik]

<p>I have CS4 on an i7 with 12 GB RAM, Windows 7 (64). I opened a 1.4 GB, layed PSD image in Bridge. Photoshop launched and revealed an image which consisted of a red horizonial bar in the top quarter of the screen, the rest was black. I closed both programs and relaunched Bridge. The thumbnail shows the original image for a moment and then transforms to the red and black. Anyone have any experience with this and advice?<br />Thanks</p>

[brad_smith8]

<p>The thumbnail you view is separate from the original file. It sounds like the original got corrupted.</p>

[thomas_janik]

<p>Thanks for the reply Brad. I can't imagine why the original has problems. I've never seen anything like this, even though I often work with large files. I usually save as a TIFF, I will avoid PSD in the future.</p>

[brad_smith8]

<p>Hopefully you have a backup to fall back on (or the original). I save to PSD all the time without issue, you kind of have to when splitting up editing sessions.</p>

<p>Are you on the 11.0.2 updated version of CS4?</p>

<p>The <a href="http://irfanview.software.informer.com/">free program Irfanview</a> can open a PSD and save to many formats, maybe it's worth a try.</p>